Type-wheel alinement.



No. 810,024. PATENTED JAN. 16, 1906.

C. A. BENNETT.

TYPE WHEEL ALINEMENT.

APPLICATION FILED APR. 26. 1905.

amve m/ko z CHARLES A. BENNETT, OF DOVER, NEWV JERSEY.

TYPE-WHEEL ALINEMENT.

Specification of Letters Patent,

Patented Jan. 16, 1906.

Application filed April 26,1905. Serial No. 257,471.

useful Improvements in Type-Wheel Alinement, of which the following is a full, clear, and exact description.

My invention relates to improvements in type-writing machines, and particularly to the alinement of type-wheels having three sets or cases of type disposed in three rows.

The object of the invention is to provide a simple and reliable construction whereby the type are brought into exact vertical as well as horizontal alinement at the printing-point.

The invention consists in the employment of a type-wheel having three rows of type and three corresponding rows of recesses or perforations so spaced and arranged that a pin or stud arranged for that purpose cooperates with a given recess at the moment of printing a given character.

The principles of the invention are illustrated in the accompanying single sheet of drawings.

For details of a machine with which this invention is adapted to be employed reference may be had to my former patent, No. 670,889, wherein a carriage construction and a typebar action are fully illustrated.

Figure 1 is a view of those parts of the mechanism which embody my invention,showing a platen in cross-section and the typewheel and alining mechanism in side elevation. view of the platen and alining-studs, together with a horizontal section of the type-wheel. Fig. 3 is a front view of the paper-guide, which also carries the alining studs.

1 is the platen, adapted to be fed backward and forward from side to side of the machine in any suitable manner.

2 is the type-whee], which is adapted to move vertically on the post 3 and rotate as well as move toward the printing position under the control of the type-bar action and shifting mechanism. The type-wheel may be of any suitable materialfor instance, vulcanite.

4 is a guide-frame mounted in front of the platen for holding the paper adjacent the printing position.

5, 6, and 7 are rows of type, being the lower case, upper case, and figures, respectively. There being three rows of type, there Fig. 2 represents a fragmentary plan' are three vertical printing positions of the type-wheel 2.

8, 9, and 10 represent recesses or perforations in the type-wheel adjacent each of the various type-faces and corresponding accurately to the circumferential position thereof.

11 and 12 are stationary studs or pins slightly smaller in size than the recesses in the type-wheel, but spaced apart from each other vertically a distance exactly equal to the distance between the recesses 8 and 9 plus the vertical lift of the type-wheel when the row of type 7 is brought into printing position. 13 is an additional stud or projection spaced vertically below the projection 12 exactly the distance between the rows of recesses 9 and 10.

When the type is brought relatively toward the printing position for printing any of the type on the row 5, the projections 12 and 13 cooperate with the recesses approximately in front thereof, as controlled by the type-bar action, and guide the movement of the type-face to its exact printing position, vertically as well as peripherally.

While the projection 13 is not absolutely necessary for my invention, it does cooperate and give an improved action by distributing the greater wear which naturally takes place when the lower-casetype are in action. When it is considered that the lower-case type are the ones principally used, the advantages of this will be apparent.

When the type-wheel is lifted by the typebar action or shifting mechanism to the position for printing from the type arranged on the middle row 6, (shown dotted in Fig. 1,) the projection 12 cooperates with one of the recesses in the row 10, depending upon the letter which is to be printed. When the typewheel is raised to its uppermost position, as

shown in dot-and-dash lines in Fig. 1, the projection 11 cooperates with one of the recesses in the row 8 when the type-wheel relatively approaches the printing position.

While this construction is exceedingly simple, it has been found to operate accurately and greatly increase the practical speed of machines of this general character. The construction costs but little to incorporate into the machine, reduces the weight of the typewheel, and does'not interfere with the operation of the parts in any of the positions, but instantly brings the type to its exact alinement under all conditions.

What I claim is 1. In a type-Writer machine, the combination of guiding studs or projections arranged vertically above and below the printing position and a type-Wheel, having all its typefaces confined to three roWs, and having re cesses corresponding to each type-face, one of the studs being adapted to cooperate with the recesses of the middle or bottom roW, and the other stud being adapted to cooperate With the recesses of the upper row, depending on the vertical position of the type-wheel.

2. In a type-Writing machine, the combination of a type-Wheel havin all of its typefaces contained Within three roWs, and three roWs of recesses or perforations in the body of the type-Wheel corresponding to the typefaces, With guiding and centering means adapted to be relatively extended into one of said recesses immediately preceding the instant of printing.

3. In a type-Writing machine, atype-Wheel having three cases of type-faces, each completely contained in a single row and having three rows of recesses or perforations corresponding to the positions of the type-faces, substantially as described and for the purpose specified.

4:. In atype-Writing machine, a paper-guide frame, projections or studs carried thereby above and below the printing position, and a type-Wheel having three complete rows of type comprising three cases and having three rows of recesses or perforations corresponding to said type and adapted to cooperate With-said projections, at the time and for the purpose specified. I Y

5. In a type-Writing machine, the combination of three projections or studs arranged vertically above and beloW the printing position, and a type-Wheel having three rows of type and recesses corresponding to each type, adapted to cooperate With said projections immediately before the printing position.

' CHARLES A. BENNETT. Witnesses:

L. VREELAND,

RoB'r. S. ALLYN. 

